Product Version: NetBeans IDE 6.5 RC1 (Build 200810171318)
Java: 1.6.0_10-rc; Java HotSpot(TM) Client VM 11.0-b13
System: Linux version 2.6.22-15-generic running on i386; UTF-8; en_US (nb)

There are problems with inserting code either from inset code menu or by CC when class name or package name contains $

Steps to reproduce:
1) create class Test in package '$'
2) use insert code to create constructor

java.lang.NullPointerException
	at org.netbeans.api.java.source.GeneratorUtilities.createConstructor(GeneratorUtilities.java:337)
	at org.netbeans.modules.editor.java.JavaCompletionItem$InitializeAllConstructorItem$2.run(JavaCompletionItem.java:2987)
	at org.netbeans.modules.editor.java.JavaCompletionItem$InitializeAllConstructorItem$2.run(JavaCompletionItem.java:2968)
	at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:953)
	at
org.netbeans.modules.editor.java.JavaCompletionItem$InitializeAllConstructorItem.substituteText(JavaCompletionItem.java:2966)
	at org.netbeans.modules.editor.java.JavaCompletionItem.defaultAction(JavaCompletionItem.java:245)
	at org.netbeans.modules.editor.completion.CompletionImpl.dispatchKeyEvent(CompletionImpl.java:564)
	at org.netbeans.modules.editor.completion.CompletionImpl.keyPressed(CompletionImpl.java:364)
...

other exceptions can be reproduced by changing the class name to $Class and trying to complete the name, use inset code
etc...